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EN 1.4587 Stainless Steel vs. C71640 Copper-nickel

EN 1.4587 stainless steel belongs to the iron alloys classification, while C71640 copper-nickel belongs to the copper alloys. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4587 stainless steel and the bottom bar is C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
52
Tensile Strength: Ultimate (UTS), MPa 540
490 to 630
Tensile Strength: Yield (Proof), MPa 250
190 to 460

Thermal Properties

Latent Heat of Fusion, J/g 310
240
Maximum Temperature: Mechanical, °C 1100
260
Melting Completion (Liquidus), °C 1420
1180
Melting Onset (Solidus), °C 1370
1120
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 17
29
Thermal Expansion, µm/m-K 15
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 36
40
Density, g/cm3 8.1
8.9
Embodied Carbon, kg CO2/kg material 6.3
5.0
Embodied Energy, MJ/kg 87
73
Embodied Water, L/kg 230
280

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 150
130 to 750
Stiffness to Weight: Axial, points 14
8.7
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 18
15 to 20
Strength to Weight: Bending, points 18
16 to 18
Thermal Diffusivity, mm2/s 4.5
8.2
Thermal Shock Resistance, points 13
16 to 21

Alloy Composition


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Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 2.0 to 3.0
61.7 to 67.8
Iron (Fe), % 32.7 to 41.9
1.7 to 2.3
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
1.5 to 2.5
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 28 to 30
29 to 32
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.025
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5